单容水柜水位处于平衡状态,当进口阀阶跃变化△时,在阶跃扰动瞬间,水位上升速度与()无关。
A.△
B.F
C.R
D.K
参考答案:A
This growth,()mainly in Southeast Asia and Africa, has dramatic consequences.
A.happens
B.which is happening
C.which happening
D.which happened
莫尔法是以铬酸钾为指示剂,用硝酸银标准溶液进行滴定的沉淀滴定法,也称为铬酸钾指示剂法。